Machine fob jointing staves



UNITED STATES PATENT OFFICE.

L. S. GHIGHESTER, OF WILLIAMSBURG, NEW YORK.

MACHINE FOR JOINTING STAVES.

Speceation of Letters Patent No. 8,288, dated August 12, 1851.

To all whom t may concern Be it known that I, Lnwis S. CHICHESTER, ofl/Villiamsburg, Kings county, and State of New York, have invented a newand useful Machine for Jointing Staves, and that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, making part of this specification, in which-Figure l is a side elevation of the machine; Fig. 2 a cross section atthe line A a of Fig. l; Fig. 3 a plan and Fig. 4 a modification of theclamping apparatus.

' The same letters indicate like parts in all the figures.

The object of my invention is to joint staves of different widths to thesame bevel in the same machine and for this purpose I use a chain ofplates, working over square pulleys upon which the staves are secured,in combination with two converging face plates on the same rotatingshaft upon which the knives are set to form a bevel, the staves beingclamped or otherwise firmly fixed on the plates of the chain, and fedthrough between the knives of the face plates by which they are ointed.

My invention consists in a inode of fastening the staves to the platewhile they are being jointed, and consists in combining with theadjacent ends of two of the plates of the chain, two hinge pieces whichare provided with a cross piece at their upper ends, and at their lowerends near their connections with the plates, with self acting toes whichclamp the staves on the plates when the two plates are moving in line,but which open and liberate the stave when the two adjacent plates forman angle with each other in passing around the angle of the squarepullies, the connection of the two upright pieces with their cross pieceand with the plates of the chain being such as to admit of the plates ofthe chain passing around in contact with the square pulleys.

In the accompanying drawings a represents the frame of the machine whichis properly adapted to the reception of the shaft b, upon which thecircular face plates @dare hung, and the two shafts cl, cl, carryingsquare pulleys e, e, over which passes the chain of plates f, f, Motionis communicated to the machine from any irst mover by a belt on thepulley g on the shaft b, or in any other way that may be` desired.

The chain of plates f and the face plates c armed with knives h beingsupposed to be moving respectively in the directions indicated by thearrows marked thereon, the attendant at the forward end of the machineplaces on the plate l a stave tobe jointed (the staves having previouslybeen assorted as to length) being careful that its ends be under thetoes z' of the clamping apparatus.

The toes may be of metal and are firmly fixed to the hinged pieces m,which are again connected at their outer ends by the cross piece n, thenature of all these connections being such as to admitof the requisitemotions of the parts. As soon as the plate l reaches the position of theplate 2 of the chain, the stave is clamped tight by means of the toesz', and being carried between the knives h, L, of the face plates isthere joint ed, all the plates being provided on their under side (as isshown only on plate 2 (see Fig. l) with a tongue or. rebate p, whichguides them between the face plates by moving in the groove g of the bedr of the machine (see Fig. 2). Then the plate with the jointed stavereaches the position of the plate 3 the stave is loosened and deliveredat that end of the machine.

It is obvious that many other devices may be adopted for clamping thestave on the plates, besides the one which I have described, alldepending upon the angle formed by any two adjacent plates in movingover the pulleys for the insertion and discharge of the stave as forinstance, by reference to Fig. 4 it will be seen that the cross piece nis provided with a joint in the middle and with a connecting link 0 tothe hinge of the two adjacent plates.

By this arrangement it will be seen that a stronger bearing is obtainedon the stave when clamped and the insertion and discharge thereoffacilitated.

I do not desire to limit myself to the precise construction andarrangement of the machine as described, but to vary the same as I maysee Afit according to circumstances, but always retaining one or both ofthel prin cipal features described above. The face plates c, c, may beso constructed as to admit of there being removed from their shaft, andothers of greater or less bevel substituted, or the knives z., h, may beso inserted in the face plates as to admit of variation in the anglethey form with each other; also the shaft of the face plates may be soarranged as to admit of raising or lowering the knives of the faceplatesivith respect to the Chain of two plates of the chain, the hingedpieces 10 plates, in order that the same machine may provided with selfact-ing toes for clamping joint Wide or narrow staves. The curve t0 thestave While it is being jointed and then be given to the stave isdetermined by the releasing it, substantially in the manner and 5 formof the bed piece l Which varies its for the purposedescribed.

proportion thereto. LEWIS S. CHICHESTER.

What I claim as my invention and desire Witnesses: Y.

to secure by Letters Patent, is- ALLEN PORTER BROWN,

Combining With the adjacent ends of any WM. BISHOP.

